SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················2
3. SPECIFICATION·················································4
4. NOISE CRITERIA CURVES·······························5
5. OUTLINES AND DIMENSIONS ·························6
6. WIRING DIAGRAM ············································7
7. REFRIGERANT SYSTEM DIAGRAM················8
8. MICROPROCESSOR CONTROL ······················9
9. SERVICE FUNCTIONS ····································18
10. TROUBLESHOOTING······································20
11. DISASSEMBLY INSTRUCTIONS·····················28
12. PARTS LIST······················································30
13. OPTIONAL PARTS ······················BACK COVER
Wireless type
Models
MSH-A18WV -
(
WH
)
MSH-A24WV -
(
WH
)
MSH-A30WV -
(
WH
)
E1
E1
E1
No. OB321
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MSH-A18WV -
MSH-A24WV -
MSH-A30WV -
E1
E1
E1
NOTE:
This service manual describes technical data of the indoor unit.
•Refer to the service manual OB322 when MSH-A18WV- , MSH-A24WV- or MSH-A30WV- is
connected with MUH-A18WV- , MUH-A24WV- or MUH-A30WV- .
•Refer to the service manual OB319 when MSH-A18WV- is connected with MXZ-A18WV- ,
MXZ-A26WV- or MXZ-A32WV- as multi system units.
•Refer to the service manual OB319 when MSH-A24WV- is connected with MXZ-A26WV- or
MXZ-A32WV- as multi system units.
E1
E1E1
E1E1
E1E1
E1E1E1
E1E1E1
Indication of model name
OB321-1.qxp 03.11.13 4:03 PM Page 1
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